- ICH GCP
- Registre américain des essais cliniques
- Essai clinique NCT07625800
Switch to Ofatumumab and Level of Immunoglobulins (SOLI)
This real-life study aims to describe IgG levels after switching from ocrelizumab 600 mg IV every 6 to 8 months in Patients with Multiple Sclerosis (PwMS) to ofatumumab 20 mg SC every month and showing a decreasing level of IgG during treatment by ocrelizumab in real life practice in France over 24 months of follow-up.
The primary objective is therefore to determine if the downward trend of IgG observed during ocrelizumab treatment is modified after a switch to ofatumumab, in PwMS treated during at least 18 months of ocrelizumab in real life practice, over 24 months of follow-up.
Aperçu de l'étude
Statut
Les conditions
Intervention / Traitement
Description détaillée
Type d'étude
Inscription (Estimé)
Contacts et emplacements
Coordonnées de l'étude
- Nom: PATRICK VERMERSCH, Pr
- Numéro de téléphone: 06.33.38.32.60
- E-mail: patrick.vermersch@chu-lille.fr
Lieux d'étude
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Lille, France, 59000
- CHU de Lille
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Contact:
- Patrick VERMERSCH, Dr
- Numéro de téléphone: 06.33.38.32.60
- E-mail: patrick.vermersch@chu-lille.fr
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Critères de participation
Critère d'éligibilité
Âges éligibles pour étudier
- Adulte
- Adulte plus âgé
Accepte les volontaires sains
Méthode d'échantillonnage
Population étudiée
La description
Inclusion Criteria:
- Adult patients (≥ 18 years old) who had been treated with ocrelizumab for a relapsing form of Multiple Sclerosis according to the ocrelizumab marketing authorization (MA) treatment regimen for at least 18 months.
- Patients with a decrease of IgG at a minimum of two consecutive dosages (around six months apart) during ocrelizumab treatment*.
- Patients already switched or switching from ocrelizumab to ofatumumab treatment (decision independent from the study*).
- Patients agreeing to participate to the study.
Able to provide their non-opposition
- At the discretion of the investigator, if a benefit for patients is expected based on their experience and depending on patient's characteristics
Exclusion Criteria:
- Patients with ocrelizumab dose spacing > 8 months in the last 18 months before switch
- Patient who underwent an immunoglobulin supplementation therapy within 18 months before the switch
- Ongoing or planned pregnancy
Plan d'étude
Comment l'étude est-elle conçue ?
Détails de conception
Cohortes et interventions
Groupe / Cohorte |
Intervention / Traitement |
|---|---|
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Ofatumumab
Adult patients (≥18 years) with relapsing multiple sclerosis treated with ocrelizumab for at least 18 months and already switched or switching from ocrelizumab to ofatumumab treatment
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There is no treatment allocation.
Participants with MS that initiated treatment with ofatumumab (Kesimpta ®) as per neurologist practice and regardless of the study protocol.
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Que mesure l'étude ?
Principaux critères de jugement
Mesure des résultats |
Délai |
|---|---|
|
Slope of serum immunoglobulin G (IgG) levels during ocrelizumab treatment period (minimum 18 months)
Délai: 42 months
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42 months
|
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Slope of serum immunoglobulin G (IgG) levels during ofatumumab treatment period (24 months)
Délai: 42 months
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42 months
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Mesures de résultats secondaires
Mesure des résultats |
Description de la mesure |
Délai |
|---|---|---|
|
Age at baseline (years)
Délai: Baseline
|
Baseline
|
|
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Number and percentage of patients with stable serum IgG levels
Délai: 24 months
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24 months
|
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Number of severe infections occurring during ocrelizumab treatment period prior to switch to ofatumumab
Délai: 18 months
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18 months
|
|
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Slope of serum immunoglobulin M (IgM) levels during ocrelizumab treatment period (minimum 18 months)
Délai: 24 months
|
24 months
|
|
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Number of patients who discontinued ofatumumab before the end of follow-up
Délai: 24 months
|
24 months
|
|
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Number and type of adverse events (AEs) during ofatumumab follow-up period
Délai: 24 months
|
24 months
|
|
|
Disease duration (years since diagnosis)
Délai: Baseline
|
Baseline
|
|
|
Number and percentage of patients with increased serum IgG levels
Délai: 24 months
|
24 months
|
|
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Slope of serum immunoglobulin M (IgM) levels during ofatumumab treatment period (24 months)
Délai: 24 months
|
24 months
|
|
|
Number of relapses per patient after switch to ofatumumab
Délai: 24 months
|
24 months
|
|
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Reasons for discontinuation of ofatumumab before the end of follow-up
Délai: 24 months
|
24 months
|
|
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Number and type of serious adverse events (SAEs) during ofatumumab follow-up period
Délai: 24 months
|
24 months
|
|
|
Distribution of Expanded Disability Status Scale (EDSS) scores after switch to ofatumumab
Délai: 24 months
|
Expanded Disability Status Scale (EDSS): score range 0-10, where higher scores indicate greater neurological disability (worse outcome).
|
24 months
|
|
Sex distribution (male/female, percentage of patients)
Délai: Baseline
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Baseline
|
|
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Distribution of Fatigue Severity Scale (FSS) scores after switch to ofatumumab
Délai: 24 months
|
Fatigue Severity Scale (FSS): score range 9-63, where higher scores indicate greater fatigue severity (worse outcome).
|
24 months
|
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Distribution of Multiple Sclerosis Functional Composite (MSFC) scores after switch to ofatumumab
Délai: 24 months
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Multiple Sclerosis Functional Composite (MSFC): standardized composite score (z-score), with higher scores indicating better neurological function (better outcome).
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24 months
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Collaborateurs et enquêteurs
Parrainer
Dates d'enregistrement des études
Dates principales de l'étude
Début de l'étude (Estimé)
Achèvement primaire (Estimé)
Achèvement de l'étude (Estimé)
Dates d'inscription aux études
Première soumission
Première soumission répondant aux critères de contrôle qualité
Première publication (Réel)
Mises à jour des dossiers d'étude
Dernière mise à jour publiée (Réel)
Dernière mise à jour soumise répondant aux critères de contrôle qualité
Dernière vérification
Plus d'information
Termes liés à cette étude
Mots clés
Termes MeSH pertinents supplémentaires
Autres numéros d'identification d'étude
- 2024_0720
- 2025-A02557-42 (Autre identifiant: [ID-RCB number, ANSM])
Informations sur les médicaments et les dispositifs, documents d'étude
Étudie un produit pharmaceutique réglementé par la FDA américaine
Étudie un produit d'appareil réglementé par la FDA américaine
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